Income Taxes (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2011
Income Taxes [Line Items]
Income tax incentives	$ 3,234,000	$ 1,300,000
Net impact of holiday tax incentives, per diluted share	$ 0.06	$ 0.02
Interest on unrecognized tax	1,600,000
Penalty on unrecognized tax	1,600,000
Tax refund	8,000,000
Additional reserve for uncertain tax benefits			7,100,000
Unrecognized tax benefits including interest and penalties	21,300,000
CHINA
Income Taxes [Line Items]
Discrete Income Tax Expense Benefit	1,200,000
Income tax incentives	1,507,000	0
Income tax reconciliation tax holidays expiration date	2015
MALAYSIA
Income Taxes [Line Items]
Income tax incentives	474,000	241,000
Income tax reconciliation tax holidays expiration date	2015
THAILAND
Income Taxes [Line Items]
Income tax incentives	$ 1,253,000	$ 1,059,000
Income tax reconciliation tax holidays expiration date	2026